Tank-heater



R. 0. AND A. J. DOHM.

TANK HEATER.

APPLICATION FILED MAR. 31. 1920.

Patented Nov. 16, 1920.

2 SHEETSSHEET lam T0 N0 m WM T 0 R E B O R E E i I W; TN asses,

1 Huaus'T. J. DOHM, M M am h ATTORNEY UNITED STATES Bonner OTMERE DOHM.AND Answer nonm or DANE, WISCONSIN.

V TANK-HEATER" Specification of Letters Patent. P te t f 6,'

Application filed March 31, 1520. Serial No. 370,320.

T 0 all whom it may concern:

Be it known that we, ROBERT OTMERE DOHM and AUGUST J. Dome, citizens ofthe United States,residing at Dane,in the county of Dane and State ofWisconsin, have invent ed certain new and useful Improvements in Tank-Heaters, of which the following is a specification.

Our invention relates to water heaters for farm purposes; usuallyemployed for tempering the drinking water in stock watering tanks; andthe objects of our invention are, first, to provide a device thatpresents a maximum heating surface to the water; second, to be able toheat a small amount of water to boiling point if desired; and,third,

to control the combustion of fuel, by a new I and efficient arrangementof dampers.

We attain these objects by the mechanism shown in the accompanyingdrawings in which 2 Figure 1, is a plan; Flg. 2, is a vertical on lineAB Fig. 1,

Fig. 3, is a front elevation; F1 4, 1s a .vertlcal transverse section,on

line 54), Fig. 2.

Similar numerals refer to similar parts throughout the several views.

The outer casing, comprising side walls 1 and 2, rounded at the lowerrear corners, and a continuous plate, which forms the front end 3, thebottom 1, and the rear end 5, said plate is welded to the sides andforms a water tight structure; a second water tight receptacle, isformed of sides 6, and 7, which are rounded at both lower corners, and aplate 8, which forms both ends and the bottom, and is welded to thesides; said sides are flanged outward at the top a distance adapted torest upon the top flanges 9, of the outer casing when the receptacle isplaced within the same, said receptacle is much less in length, andslightly less in width and depth than the outer casing and is disposedin the top thereof, a distance from the front end suflicient toform afire box 10; a channel 11, is secured to the sides of the fire box inalinement with each other, extending from the rear top to the front sideadjacent the bottom, a damper plate12, provided with a handle 13, isslidably disposed in the channels and extends across the fire box, agrate 14, is provided, which abuts the front end of the receptacle andlongitudinal section,

covers the bottom of the fire-box to within a distance of the front end,and registers with the lower end 'of the damperplate 12,

thereby forming a narrow air passage 15, in front of the grate. Byraising the damper plate 12, or removing thesame, the grate can'beturned edgewise'and taken out of the firebox, facilitating the cleaningof the heater. The receptacle being narrower than the casing, a smokeflue 16, is formed at each side thereof, and a combustion chamber 17, isformed between the bottom 1, of the outer casing and the bottom 8, ofthe receptacle, said chamber extending from the fireboX 10, backward andupward to the smoke outlet 18, said outlet is a cast metal hood,extending across the casing and terminate ing in a pipe collar 19. Ahorizontal slidable cover 20, is disposed on flanges 9, on the sides 1,i and, 2, of the casing and is adapted to be used as a sliding damper,or to entirely'cover the firebox. To utilize the entire heating surfaceof the heater, two or more tubes 21, are provided, extending from theinside of the receptacle to the outside of the casing, permitting waterto pass from a watering tank 22, into the receptacle,

wooden wedges 23, are provided for closing said tubes by inserting themin loops 2 1, which are secured to the inside of the receptacle in frontof the tubes. Holes 25,

' are located in the flanges 9, of the casing sides 1, and 2, throughwhich rods 26, are disposed for anchoring the heater to the bottom ofthe tank by means of screw eyes;

27. A cover 28, with a handle 29, covers the entire receptacle and isprevented from moving endwise by depending vflangesfiO. WVhen desired toheat a small amount of water to boiling point, put on the cover 2 8, andI insert the wedges 23, in the loops 24c, closing the tubes 21.

To use our heater a fire is started in the grate 1 1, and the'damper 12,placed in its ,lower position, see Figs 1 and 2, in that position thedraft will be in front and under the grate, then regulate the supply ofair by the slidable cover 20, to check the fire, raise the damper 12,and close the cover 20. 1 Having thus described our invention We claim.

In a device of the kind described, the combination of an outer watertight casing, with an inner water tight compartment, the two connectedby tubes, and means for closing the tubes, a firebox between the fronttures in the presence of twosubsbribing ends of the casing and thecompartment, :1 Witnesses.

- grate near the bottom ofthe firebox, and v a RQBERT OTMERE DOHM asliding 'cover'and a diagonal damper plate AUGUST J. DOHM; 5 adapted tobe used to regulate the locality I Witnesses: V

and supply of air to the grate. v WILLIAM ODWYER, In testimony whereofWe aflixour signav V OORA M. LOCKWOOD.

